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Jimm is a mobile ICQ client for Java ME phones. In the mid-2000s, people installed it on Nokia, Siemens, Sony Ericsson, Motorola, and other feature phones to stay online in ICQ without a computer. It mattered not only as software, but as part of a culture: short messages, UINs instead of modern usernames, statuses, compact contact lists, and the incoming message sound. In 2026, interest in Jimm is returning because of nostalgia and the desire to revive real old devices. Many phones still power on, support JAR apps, and can access the network through GPRS, EDGE, Wi-Fi, or an emulator. The project does not claim to be official ICQ. The goal is to preserve the old mobile messenger experience and give people a clear way to run Jimm, QIP, and an OSCAR-style connection again. Today, Jimm is not just an old JAR file; it is an entry point into a retro network for people who want the feeling of ICQ back.
You need a client, a new UIN, and correct server settings. Use QIP 2005 for Windows, Jimm JAR for a feature phone, or J2ME Loader on Android with the same JAR file.
Jimm is for real Java phones and mobile ICQ nostalgia. QIP is useful for first testing because desktop errors are easier to see and settings are faster to change.